addusercommand line
I need to add an user called "admin". When I type:
# adduser admin
I get:
adduser: The group 'admin' already exists.
So, I guess, by default, adduser is trying to create an "admin" group that already exist at the same time as creating the "admin" user. Reading adduser man page I've seen -N option to avoid goup creation. I tried this:
adduser -N admin
With the same result. How can I create an "admin" user?
Try typing the following in a terminal
sudo userdel -r atc
This should remove all instances of the user
You don't need to install something, to search on google or to have an internet connection. Just open your terminal and first of all you must to run the following command:
man adduser
to open the manual page for adduser command.
Then, in that manual page type: /--disabled-login followed by Enter then press repetitively n to find all occurrences containing --disabled-login. Do the same for --gecos.
With a little bit of luck you will find out that:
--disabled-login Do not run passwd to set the password. The user won't be able to use her account until the password is set.
and:
--gecos GECOS Set the gecos field for the new entry generated. adduser will not ask for finger information if this option is given.
For those wondering what gecos actually is, wikipedia defines it as follows:
The gecos field, or GECOS field is an entry in the /etc/passwd file on Unix, and similar operating systems. It is typically used to record general information about the account or its user(s) such as their real name and phone number.
Best Answer
As steeldriver suggest, this works: